Made from 100% recyclable material, the Go Secure extra strong polythene envelope is ideal for people that care about the environment as much as their business. Designed to be durable and tough, the polythene construction prevents ripping and tearing when in transit, keeping your contents as safe as possible. The extra strength that these envelopes provide extends to the weather, keeping items from water damage, no matter how bad the weather gets. This 20 pack of envelopes measuring 240 x 320mm are opaque in colour for confidentiality with a peel and seal closure.